Ross 27 Series User Manual

27 Series Explosion-Proof Poppet Valves
Thank You!
You have purchased a premium-quality ROSS
®
pneumatic valve.
It is a poppet valve designed for inline mounting, and has been
built to the highest standards.
With care in its installation and maintenance, you can expect it to
have a long and economical service life. So before you go any
further, please take a few minutes to look over the information
in this folder. Then save it for future reference and for the useful
service information it contains. A general service manual with
more detailed information is available from ROSS upon request.
VALVE INSTALLATION
Pneumatic equipment should be installed only by
persons trained and experienced in such installation.
Important Note:
ROSS 27 Series valves are not designed as control
valves for air clutch/brake mechanisms on mechanical
power presses, and must not be installed for such use.
Only double valves conforming to OSHA standards
shall be used in such applications.
Air Lines: Before installing a valve in a new or an
existing system, the air lines must be blown clean of
all contaminants. It is recommended that an air filter be
installed in the inlet line close to the valve.
Valve Inlet (Port 1): Be sure that the supply line is
of adequate size and does not restrict the air supply
because of a crimp in the line, a sharp bend, or a
clogged filter element.
Valve Outlets (Ports 2 and 4): For faster pressurizing
and exhausting of the mechanism being operated by
the valve, locate the valve as close as possible to the
mechanism. The lines must be of adequate size and be
free of crimps and sharp bends.
Valve Exhausts (Port 3): Do not restrict the air flow
from the exhaust port of the valve body or pilot body
as this can adversely affect the operation of the valve.
However, to reduce exhaust noise, an efficient silencer
may be used. ROSS silencers reduce impact noise by
as much as 25 dB, and produce little back pressure.
Electrical Supply: The voltage and hertz ratings of the
valve solenoids (if any) are shown on the pilot housing.
The electrical supply must correspond to these ratings
otherwise the solenoids are subject to early failure.
The power supply must be capable of handling the
maximum power. See Valve Specifications on page 3
for information on maximum power.
Operating Pressures and Temperatures: Allowable
ranges for pressure and temperatures are given in the
Valve Specifications on page 3. Exceeding the values
shown can shorten valve life.
Pilot Supply:
Pressure for the pilot valve is supplied internally for most
valves, and requires no special connection. See Valve
Specifications, for pressure requirements.
Pipe Installation: To install pipe in valve ports,
engage pipe one turn, apply pipe thread sealant (tape
not recommended), and tighten pipe. This procedure
will prevent sealant from entering and contaminating
the valve.
IMPORTANT NOTE: Please read carefully and thoroughly all the WARNINGS and CAUTIONS on page 4.
ROSS CONTROLS
®
www.rosscontrols.com
Please read and make sure you understand all installation instructions before proceeding with the installation.
Additional technical documentation is available for download at www.rosscontrols.com.
If you have any questions about installation or servicing your valve, please contact ROSS or your authorized ROSS
distributor, see contact information listed at the back of this document, or visit www.rosscontrols.com to find your distributor.

Ross 27 Series Specifications

General

ME Count	2
Keyers per ME	4
Internal Media Stores	2
Networking	Ethernet
Input Voltage	100-240 VAC
DVEs	2
Redundancy	Optional
Operating Temperature	0-40°C
Format Support	1080i, 720p, 525i, 625i

Summary

Valve Installation

Air Lines

Preparing and connecting air lines to the valve for optimal performance and safety.

Valve Inlet (Port 1)

Ensuring the supply line for the valve inlet is adequately sized and free of obstructions.

Valve Outlets (Ports 2 and 4)

Proper placement and sizing of lines for valve outlets to ensure fast pressurization/exhaust.

Valve Exhausts (Port 3)

Avoiding restriction of the valve exhaust port to maintain proper operation and reduce noise.

Electrical Supply

Matching electrical supply voltage and hertz ratings to valve solenoids to prevent early failure.

Operating Pressures and Temperatures

Adhering to specified pressure and temperature ranges to ensure valve longevity.

Pilot Supply

Understanding pilot supply requirements, often internally supplied for most valves.

Pipe Installation

Procedure for installing pipe in valve ports using thread sealant to prevent contamination.

Valve Maintenance

Supply Clean Air

Importance of filtered air supply to prevent breakdowns and ensure proper valve performance.

Check Lubricator Supply Rate

Ensuring proper oil mist delivery from lubricators to prevent malfunctions due to excessive lubrication.

Compatible Lubricants

Guidelines on selecting compatible oils for air lines and avoiding those harmful to valve components.

Cleaning the Valve

Procedure for cleaning internal valve components affected by dirt or varnish accumulation.

Electrical Contacts

Maintaining good condition of switches and relay contacts in electrical circuits for solenoids.

Replace Worn Components

Steps for safely replacing worn valve components, including shutting off energy sources.

Valve Specifications

Valve Service

Cautions and Warnings

Pre-Installation or Service

Safety precautions before servicing pneumatic components, including energy isolation.

Filtration and Lubrication

Guidelines on air filtration and lubrication to prevent equipment damage and ensure safety.

Avoid Intake/Exhaust Restriction

Warnings against restricting air flow in supply or exhaust lines to maintain valve operation.

Power Presses

Requirements for press control double valves and monitoring systems on hazardous machinery.

Energy Isolation/Emergency Stop

Clarification that specific ROSS valves are energy isolation devices, not emergency stop devices.

Standard Warranty